关键词: 分批发酵, 分批发酵

Abstract: To understand the effects of irrigation water temperature on the infiltration parameters of soil water, soil column experiment was carried out to investigate the infiltration characteristics of water of three temperatures (i.e., 5, 20, 40℃) in a saline alkaline sandy soil. The changes of soil water infiltration and wetting front were studied at different temperatures. The results showed that there was a linear relationship between the moving distance of the wetting front and the square root of time. The parameter α increased in the form of a power function with rising temperature,and the higher the temperature, the steeper the line. In the same time period, the higher the temperature, the longer the wetting front moved. The accumulative infiltration amount had a fairly good linear relationship with the square root of time, and the higher the temperature, the bigger the slope. In the same time period, a larger accumulative infiltration amount was recorded at a higher temperature. The effects of temperature on the moving rate of the wetting front and the infiltration rate of soil water in saline alkaline sandy soil changed with changing temperature, and the higher the temperature, the smaller the effects.